US PATENT SUBCLASS 91 / 321
.~ Motive fluid constantly applied to one working member face (235) (417)

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

218  DF  CYCLICALLY OPERABLE {34}
321.~ Motive fluid constantly applied to one working member face (235) (417)

DEFINITION

Classification: 91/321

(under subclass 218) Apparatus in which motive fluid is continuously supplied to one chamber to act constantly on a working member of a motor during recurring cycles thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

224, for cyclically operable motors having a distributor in the piston, and in which the distributor establishes communication between opposed faces, one face of which is usually constantly supplied.

235, for a cyclically operable motor having opposed working faces, and in which one working chamber receives a controlled motive fluid supply from an opposed chamber having a constant supply. NOTE "PLACEMENT OF PATENTS" IN THE CLASS DEFINITION AND THE PARAGRAPH FOLLOWING THE TITLE IN THE SCHEDULE OF THIS CLASS.

417, for noncyclically operable motors having motive fluid constantly applied to one working member face.